68904e1d72
This brings in the several improvements since the code was initially added for compatibility. In particular, this fixes widget conflicts with existing functions and executables by prefixing all redefined widgets with "_zsh_highlight_widget_".
553 lines
21 KiB
Bash
553 lines
21 KiB
Bash
#!/usr/bin/env zsh
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##############################################################################
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#
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# Copyright (c) 2009 Peter Stephenson
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# Copyright (c) 2011 Guido van Steen
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# Copyright (c) 2011 Suraj N. Kurapati
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# Copyright (c) 2011 Sorin Ionescu
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# Copyright (c) 2011 Vincent Guerci
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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#
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# * Neither the name of the FIZSH nor the names of its contributors
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# may be used to endorse or promote products derived from this
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# software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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##############################################################################
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#-----------------------------------------------------------------------------
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# configuration variables
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#-----------------------------------------------------------------------------
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HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND='bg=magenta,fg=white,bold'
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HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND='bg=red,fg=white,bold'
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HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS='i'
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#-----------------------------------------------------------------------------
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# the main ZLE widgets
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#-----------------------------------------------------------------------------
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function history-substring-search-up() {
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_history-substring-search-begin
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_history-substring-search-up-history ||
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_history-substring-search-up-buffer ||
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_history-substring-search-up-search
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_history-substring-search-end
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}
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function history-substring-search-down() {
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_history-substring-search-begin
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_history-substring-search-down-history ||
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_history-substring-search-down-buffer ||
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_history-substring-search-down-search
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_history-substring-search-end
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}
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zle -N history-substring-search-up
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zle -N history-substring-search-down
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bindkey '\e[A' history-substring-search-up
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bindkey '\e[B' history-substring-search-down
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#-----------------------------------------------------------------------------
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# implementation details
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#-----------------------------------------------------------------------------
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zmodload -F zsh/parameter
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#
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# We have to "override" some keys and widgets if the
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# zsh-syntax-highlighting plugin has not been loaded:
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#
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# https://github.com/nicoulaj/zsh-syntax-highlighting
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#
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if [[ $+functions[_zsh_highlight] -eq 0 ]]; then
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#
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# Dummy implementation of _zsh_highlight()
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# that simply removes existing highlights
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#
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function _zsh_highlight() {
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region_highlight=()
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}
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#
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# Remove existing highlights when the user
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# inserts printable characters into $BUFFER
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#
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function ordinary-key-press() {
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if [[ $KEYS == [[:print:]] ]]; then
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region_highlight=()
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fi
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zle .self-insert
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}
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zle -N self-insert ordinary-key-press
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#
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# The following snippet was taken from the zsh-syntax-highlighting project:
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#
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# https://github.com/zsh-users/zsh-syntax-highlighting/blob/56b134f5d62ae3d4e66c7f52bd0cc2595f9b305b/zsh-syntax-highlighting.zsh#L126-161
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#
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# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# * Neither the name of the zsh-syntax-highlighting contributors nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#--------------8<-------------------8<-------------------8<-----------------
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# Rebind all ZLE widgets to make them invoke _zsh_highlights.
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_zsh_highlight_bind_widgets()
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{
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# Load ZSH module zsh/zleparameter, needed to override user defined widgets.
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zmodload zsh/zleparameter 2>/dev/null || {
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echo 'zsh-syntax-highlighting: failed loading zsh/zleparameter.' >&2
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return 1
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}
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# Override ZLE widgets to make them invoke _zsh_highlight.
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local cur_widget
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for cur_widget in ${${(f)"$(builtin zle -la)"}:#(.*|_*|orig-*|run-help|which-command|beep)}; do
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case $widgets[$cur_widget] in
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# Already rebound event: do nothing.
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user:$cur_widget|user:_zsh_highlight_widget_*);;
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# User defined widget: override and rebind old one with prefix "orig-".
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user:*) eval "zle -N orig-$cur_widget ${widgets[$cur_widget]#*:}; \
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_zsh_highlight_widget_$cur_widget() { builtin zle orig-$cur_widget -- \"\$@\" && _zsh_highlight }; \
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zle -N $cur_widget _zsh_highlight_widget_$cur_widget";;
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# Completion widget: override and rebind old one with prefix "orig-".
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completion:*) eval "zle -C orig-$cur_widget ${${widgets[$cur_widget]#*:}/:/ }; \
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_zsh_highlight_widget_$cur_widget() { builtin zle orig-$cur_widget -- \"\$@\" && _zsh_highlight }; \
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zle -N $cur_widget _zsh_highlight_widget_$cur_widget";;
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# Builtin widget: override and make it call the builtin ".widget".
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builtin) eval "_zsh_highlight_widget_$cur_widget() { builtin zle .$cur_widget -- \"\$@\" && _zsh_highlight }; \
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zle -N $cur_widget _zsh_highlight_widget_$cur_widget";;
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# Default: unhandled case.
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*) echo "zsh-syntax-highlighting: unhandled ZLE widget '$cur_widget'" >&2 ;;
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esac
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done
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}
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#-------------->8------------------->8------------------->8-----------------
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_zsh_highlight_bind_widgets
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fi
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function _history-substring-search-begin() {
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setopt localoptions extendedglob
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_history_substring_search_move_cursor_eol=false
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_history_substring_search_query_highlight=
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#
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# Continue using the previous $_history_substring_search_result by default,
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# unless the current query was cleared or a new/different query was entered.
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#
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if [[ -z $BUFFER || $BUFFER != $_history_substring_search_result ]]; then
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#
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# For the purpose of highlighting we will also keep
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# a version without doubly-escaped meta characters.
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#
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_history_substring_search_query=$BUFFER
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#
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# $BUFFER contains the text that is in the command-line currently.
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# we put an extra "\\" before meta characters such as "\(" and "\)",
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# so that they become "\\\(" and "\\\)".
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#
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_history_substring_search_query_escaped=${BUFFER//(#m)[\][()|\\*?#<>~^]/\\$MATCH}
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#
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# Find all occurrences of the search query in the history file.
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#
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# (k) turns it an array of line numbers.
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#
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# (on) seems to remove duplicates, which are default
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# options. They can be turned off by (ON).
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#
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_history_substring_search_matches=(${(kon)history[(R)(#$HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS)*${_history_substring_search_query_escaped}*]})
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#
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# Define the range of values that $_history_substring_search_match_index
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# can take: [0, $_history_substring_search_matches_count_plus].
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#
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_history_substring_search_matches_count=$#_history_substring_search_matches
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_history_substring_search_matches_count_plus=$(( _history_substring_search_matches_count + 1 ))
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_history_substring_search_matches_count_sans=$(( _history_substring_search_matches_count - 1 ))
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#
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# If $_history_substring_search_match_index is equal to
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# $_history_substring_search_matches_count_plus, this indicates that we
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# are beyond the beginning of $_history_substring_search_matches.
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#
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# If $_history_substring_search_match_index is equal to 0, this indicates
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# that we are beyond the end of $_history_substring_search_matches.
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#
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# If we have initially pressed "up" we have to initialize
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# $_history_substring_search_match_index to
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# $_history_substring_search_matches_count_plus so that it will be
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# decreased to $_history_substring_search_matches_count.
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#
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# If we have initially pressed "down" we have to initialize
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# $_history_substring_search_match_index to
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# $_history_substring_search_matches_count so that it will be increased to
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# $_history_substring_search_matches_count_plus.
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#
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if [[ $WIDGET == history-substring-search-down ]]; then
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_history_substring_search_match_index=$_history_substring_search_matches_count
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else
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_history_substring_search_match_index=$_history_substring_search_matches_count_plus
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fi
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fi
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}
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function _history-substring-search-end() {
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setopt localoptions extendedglob
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_history_substring_search_result=$BUFFER
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# move the cursor to the end of the command line
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if [[ $_history_substring_search_move_cursor_eol == true ]]; then
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CURSOR=${#BUFFER}
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fi
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# highlight command line using zsh-syntax-highlighting
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_zsh_highlight
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# highlight the search query inside the command line
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if [[ -n $_history_substring_search_query_highlight && -n $_history_substring_search_query ]]; then
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#
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# The following expression yields a variable $MBEGIN, which
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# indicates the begin position + 1 of the first occurrence
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# of _history_substring_search_query_escaped in $BUFFER.
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#
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: ${(S)BUFFER##(#m$HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS)($_history_substring_search_query##)}
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local begin=$(( MBEGIN - 1 ))
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local end=$(( begin + $#_history_substring_search_query ))
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region_highlight+=("$begin $end $_history_substring_search_query_highlight")
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fi
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# For debugging purposes:
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# zle -R "mn: "$_history_substring_search_match_index" m#: "${#_history_substring_search_matches}
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# read -k -t 200 && zle -U $REPLY
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# Exit successfully from the history-substring-search-* widgets.
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true
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}
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function _history-substring-search-up-buffer() {
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#
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# Check if the UP arrow was pressed to move the cursor within a multi-line
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# buffer. This amounts to three tests:
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#
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# 1. $#buflines -gt 1.
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#
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# 2. $CURSOR -ne $#BUFFER.
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#
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# 3. Check if we are on the first line of the current multi-line buffer.
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# If so, pressing UP would amount to leaving the multi-line buffer.
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#
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# We check this by adding an extra "x" to $LBUFFER, which makes
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# sure that xlbuflines is always equal to the number of lines
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# until $CURSOR (including the line with the cursor on it).
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#
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local buflines XLBUFFER xlbuflines
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buflines=(${(f)BUFFER})
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XLBUFFER=$LBUFFER"x"
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xlbuflines=(${(f)XLBUFFER})
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if [[ $#buflines -gt 1 && $CURSOR -ne $#BUFFER && $#xlbuflines -ne 1 ]]; then
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zle up-line-or-history
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return true
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fi
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false
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}
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function _history-substring-search-down-buffer() {
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#
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# Check if the DOWN arrow was pressed to move the cursor within a multi-line
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# buffer. This amounts to three tests:
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#
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# 1. $#buflines -gt 1.
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#
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# 2. $CURSOR -ne $#BUFFER.
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#
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# 3. Check if we are on the last line of the current multi-line buffer.
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# If so, pressing DOWN would amount to leaving the multi-line buffer.
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#
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# We check this by adding an extra "x" to $RBUFFER, which makes
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# sure that xrbuflines is always equal to the number of lines
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# from $CURSOR (including the line with the cursor on it).
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#
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local buflines XRBUFFER xrbuflines
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buflines=(${(f)BUFFER})
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XRBUFFER="x"$RBUFFER
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xrbuflines=(${(f)XRBUFFER})
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if [[ $#buflines -gt 1 && $CURSOR -ne $#BUFFER && $#xrbuflines -ne 1 ]]; then
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zle down-line-or-history
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return true
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fi
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false
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}
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function _history-substring-search-up-history() {
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#
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# Behave like up in ZSH, except clear the $BUFFER
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# when beginning of history is reached like in Fish.
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#
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if [[ -z $_history_substring_search_query ]]; then
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# we have reached the absolute top of history
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if [[ $HISTNO -eq 1 ]]; then
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BUFFER=
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# going up from somewhere below the top of history
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else
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zle up-line-or-history
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fi
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return true
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fi
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false
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}
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function _history-substring-search-down-history() {
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#
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# Behave like down-history in ZSH, except clear the
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# $BUFFER when end of history is reached like in Fish.
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#
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if [[ -z $_history_substring_search_query ]]; then
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# going down from the absolute top of history
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if [[ $HISTNO -eq 1 && -z $BUFFER ]]; then
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BUFFER=${history[1]}
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_history_substring_search_move_cursor_eol=true
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# going down from somewhere above the bottom of history
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else
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zle down-line-or-history
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fi
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return true
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fi
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false
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}
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function _history-substring-search-up-search() {
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_history_substring_search_move_cursor_eol=true
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#
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# Highlight matches during history-substring-up-search:
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#
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# The following constants have been initialized in
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# _history-substring-search-up/down-search():
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#
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# $_history_substring_search_matches is the current list of matches
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# $_history_substring_search_matches_count is the current number of matches
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# $_history_substring_search_matches_count_plus is the current number of matches + 1
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# $_history_substring_search_matches_count_sans is the current number of matches - 1
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# $_history_substring_search_match_index is the index of the current match
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#
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# The range of values that $_history_substring_search_match_index can take
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# is: [0, $_history_substring_search_matches_count_plus]. A value of 0
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# indicates that we are beyond the end of
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# $_history_substring_search_matches. A value of
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# $_history_substring_search_matches_count_plus indicates that we are beyond
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# the beginning of $_history_substring_search_matches.
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#
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# In _history-substring-search-up-search() the initial value of
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# $_history_substring_search_match_index is
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# $_history_substring_search_matches_count_plus. This value is set in
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# _history-substring-search-begin(). _history-substring-search-up-search()
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# will initially decrease it to $_history_substring_search_matches_count.
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#
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if [[ $_history_substring_search_match_index -ge 2 ]]; then
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#
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# Highlight the next match:
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#
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# 1. Decrease the value of $_history_substring_search_match_index.
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#
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# 2. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
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# to highlight the current buffer.
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#
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(( _history_substring_search_match_index-- ))
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BUFFER=$history[$_history_substring_search_matches[$_history_substring_search_match_index]]
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_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
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elif [[ $_history_substring_search_match_index -eq 1 ]]; then
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#
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# We will move beyond the end of $_history_substring_search_matches:
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#
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# 1. Decrease the value of $_history_substring_search_match_index.
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#
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# 2. Save the current buffer in $_history_substring_search_old_buffer,
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# so that it can be retrieved by
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# _history-substring-search-down-search() later.
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#
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# 3. Make $BUFFER equal to $_history_substring_search_query.
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#
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# 4. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND
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# to highlight the current buffer.
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#
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(( _history_substring_search_match_index-- ))
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_history_substring_search_old_buffer=$BUFFER
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BUFFER=$_history_substring_search_query
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_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND
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elif [[ $_history_substring_search_match_index -eq $_history_substring_search_matches_count_plus ]]; then
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#
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# We were beyond the beginning of $_history_substring_search_matches but
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# UP makes us move back to $_history_substring_search_matches:
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#
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# 1. Decrease the value of $_history_substring_search_match_index.
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#
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# 2. Restore $BUFFER from $_history_substring_search_old_buffer.
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#
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# 3. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
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# to highlight the current buffer.
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#
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(( _history_substring_search_match_index-- ))
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BUFFER=$_history_substring_search_old_buffer
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_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
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fi
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}
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function _history-substring-search-down-search() {
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_history_substring_search_move_cursor_eol=true
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#
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# Highlight matches during history-substring-up-search:
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#
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# The following constants have been initialized in
|
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# _history-substring-search-up/down-search():
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#
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# $_history_substring_search_matches is the current list of matches
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# $_history_substring_search_matches_count is the current number of matches
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# $_history_substring_search_matches_count_plus is the current number of matches + 1
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# $_history_substring_search_matches_count_sans is the current number of matches - 1
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# $_history_substring_search_match_index is the index of the current match
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|
#
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# The range of values that $_history_substring_search_match_index can take
|
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# is: [0, $_history_substring_search_matches_count_plus]. A value of 0
|
|
# indicates that we are beyond the end of
|
|
# $_history_substring_search_matches. A value of
|
|
# $_history_substring_search_matches_count_plus indicates that we are beyond
|
|
# the beginning of $_history_substring_search_matches.
|
|
#
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|
# In _history-substring-search-down-search() the initial value of
|
|
# $_history_substring_search_match_index is
|
|
# $_history_substring_search_matches_count. This value is set in
|
|
# _history-substring-search-begin().
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|
# _history-substring-search-down-search() will initially increase it to
|
|
# $_history_substring_search_matches_count_plus.
|
|
#
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if [[ $_history_substring_search_match_index -le $_history_substring_search_matches_count_sans ]]; then
|
|
#
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|
# Highlight the next match:
|
|
#
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|
# 1. Increase $_history_substring_search_match_index by 1.
|
|
#
|
|
# 2. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
|
# to highlight the current buffer.
|
|
#
|
|
(( _history_substring_search_match_index++ ))
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|
BUFFER=$history[$_history_substring_search_matches[$_history_substring_search_match_index]]
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_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
|
|
|
elif [[ $_history_substring_search_match_index -eq $_history_substring_search_matches_count ]]; then
|
|
#
|
|
# We will move beyond the beginning of $_history_substring_search_matches:
|
|
#
|
|
# 1. Increase $_history_substring_search_match_index by 1.
|
|
#
|
|
# 2. Save the current buffer in $_history_substring_search_old_buffer, so
|
|
# that it can be retrieved by _history-substring-search-up-search()
|
|
# later.
|
|
#
|
|
# 3. Make $BUFFER equal to $_history_substring_search_query.
|
|
#
|
|
# 4. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND
|
|
# to highlight the current buffer.
|
|
#
|
|
(( _history_substring_search_match_index++ ))
|
|
_history_substring_search_old_buffer=$BUFFER
|
|
BUFFER=$_history_substring_search_query
|
|
_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND
|
|
|
|
elif [[ $_history_substring_search_match_index -eq 0 ]]; then
|
|
#
|
|
# We were beyond the end of $_history_substring_search_matches but DOWN
|
|
# makes us move back to the $_history_substring_search_matches:
|
|
#
|
|
# 1. Increase $_history_substring_search_match_index by 1.
|
|
#
|
|
# 2. Restore $BUFFER from $_history_substring_search_old_buffer.
|
|
#
|
|
# 3. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
|
# to highlight the current buffer.
|
|
#
|
|
(( _history_substring_search_match_index++ ))
|
|
BUFFER=$_history_substring_search_old_buffer
|
|
_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
|
fi
|
|
}
|
|
|
|
# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
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|
# vim: ft=zsh sw=2 ts=2 et
|